Development of the world´s largest hydrogen indirectly cooled turbine generator

Author

Nagakura, Ken ; Otaka, Toru ; Kakiuchi, Mikio ; Gunji, Yuichiro ; Nakayama, Shinya ; Murata, Daisuke ; Kabata, Yasuo ; Hatano, Hiroshi

Author_Institution

Toshiba Corp., Yokohama, Japan

fYear

2009

fDate

15-18 Nov. 2009

Firstpage

1

Lastpage

6

Abstract

Water-cooled stator-winding generators are widely used for large capacity turbine generators of thermal power plant. However, simpler stator cooling system is preferred considering easy operation and maintenance and lower cost. Hydrogen indirectly cooled generator is one of the solution with expansion its capacity. TOSHIBA has developed, manufactured and tested 670 MVA hydrogen indirectly cooled generator. Meanwhile, higher efficiency is requested for turbine generators to reduce the global environment load. The developed generator has accomplished 99.1% of efficiency at shop test and will meet high efficiency demands. In this paper, applied technologies and shop test results of the large capacity hydrogen indirectly cooled generator are described.

Keywords

thermal power stations; turbogenerators; apparent power 670 MVA; hydrogen indirectly cooled turbine generator; thermal power plant; Conductors; Cooling; Costs; Hydraulic turbines; Hydrogen; Maintenance; Manufacturing; Power generation; Stator windings; Testing; Efficiency; Hydrogen cooled; Turbine generator;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on

Conference_Location

Tokyo

Print_ISBN

978-1-4244-5177-7

Electronic_ISBN

978-4-88686-067-5

Type

conf

DOI

10.1109/ICEMS.2009.5382940

Filename

5382940